Rio Del Mar: english

The shaded band is this school's normal range. If nothing about how it works changes, nearly every future year should land inside it. Zero means the typical student just meets the state standard. The small numbers under the years are how many students were tested.

Measured against the grade bars

The state's English test uses one scale for every grade, so a score means the same thing in grade 3 as in grade 5.

All students

3rd The average 3rd grader scores 47 points under the grade 3 bar. 2385 vs. 2432.
4th The average 4th grader scores just under the grade 3 bar. 2425 vs. 2432. The 4th-grade bar is 2473.
5th The average 5th grader scores 26 points under the grade 5 bar. 2476 vs. 2502.

Students fluent in English

The closest these results come to reading alone: English is not in the way. Includes students who have only ever spoken English.

Grade bars 3rd 68 students 40 points under the grade 3 bar. 4th 71 students 35 points under the grade 4 bar. 5th 68 students 11 points under the grade 5 bar.

English learners

Students leave this group as they become fluent, so its average stays low even where they learn well.

Grade bars 3rd 19 students 75 points under the grade 3 bar. 4th 19 students 56 points under the grade 3 bar. 5th 22 students Just under the grade 3 bar.

the group's average that grade's own bar the distance between

2026 results. The English test covers reading, writing, listening and research together. "Meets standard" is the state's mark for being on track for that grade. The state leaves out any group of ten students or fewer, so a grade may be missing from the charts.

Step 1 · Each year's result

For each grade tested, take the average (mean) scale score from the California Department of Education's results file, and subtract the lowest score that counts as "Standard Met" for that grade. That is the grade's distance from standard. Weight each grade by its share of the students tested, then add the grades up. Grades where the state hides the average because ten or fewer students tested are left out entirely.

2015 from sb_ca2015_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	103,885	2406.8	− 2432	−25.2	× 88 / 244	−9.1
4	103,888	2422.8	− 2473	−50.2	× 79 / 244	−16.3
5	103,889	2451.1	− 2502	−50.9	× 77 / 244	−16.1
Sum, rounded to a whole point						−41

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	96,537	2422.3	− 2432	−9.7	× 89 / 273	−3.2
4	96,539	2445.0	− 2473	−28	× 101 / 273	−10.4
5	96,542	2492.7	− 2502	−9.3	× 83 / 273	−2.8
Sum, rounded to a whole point						−16

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	99,332	2410.9	− 2432	−21.1	× 88 / 290	−6.4
4	99,335	2453.4	− 2473	−19.6	× 93 / 290	−6.3
5	99,337	2478.4	− 2502	−23.6	× 109 / 290	−8.9
Sum, rounded to a whole point						−22

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	99,491	2417.1	− 2432	−14.9	× 89 / 284	−4.7
4	99,494	2447.6	− 2473	−25.4	× 94 / 284	−8.4
5	99,495	2492.3	− 2502	−9.7	× 101 / 284	−3.4
Sum, rounded to a whole point						−17

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	100,148	2410.4	− 2432	−21.6	× 81 / 229	−7.6
4	100,149	2447.7	− 2473	−25.3	× 67 / 229	−7.4
5	100,150	2486.5	− 2502	−15.5	× 81 / 229	−5.5
Sum, rounded to a whole point						−21

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	98,007	2393.3	− 2432	−38.7	× 70 / 206	−13.2
4	98,008	2424.3	− 2473	−48.7	× 58 / 206	−13.7
5	98,009	2457.1	− 2502	−44.9	× 78 / 206	−17
Sum, rounded to a whole point						−44

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	100,369	2396.3	− 2432	−35.7	× 54 / 188	−10.3
4	100,370	2429.9	− 2473	−43.1	× 72 / 188	−16.5
5	100,371	2499.2	− 2502	−2.8	× 62 / 188	−0.9
Sum, rounded to a whole point						−28

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	100,205	2401.2	− 2432	−30.8	× 58 / 195	−9.2
4	100,206	2425.9	− 2473	−47.1	× 60 / 195	−14.5
5	100,207	2496.9	− 2502	−5.1	× 77 / 195	−2
Sum, rounded to a whole point						−26

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	100,086	2390.1	− 2432	−41.9	× 84 / 213	−16.5
4	100,087	2443.7	− 2473	−29.3	× 64 / 213	−8.8
5	100,088	2461.8	− 2502	−40.2	× 65 / 213	−12.3
Sum, rounded to a whole point						−38

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	99,792	2395.5	− 2432	−36.5	× 88 / 235	−13.7
4	99,793	2423.1	− 2473	−49.9	× 88 / 235	−18.7
5	99,794	2463.5	− 2502	−38.5	× 59 / 235	−9.7
Sum, rounded to a whole point						−42

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	99,455	2384.7	− 2432	−47.3	× 87 / 267	−15.4
4	99,456	2424.9	− 2473	−48.1	× 90 / 267	−16.2
5	99,457	2475.6	− 2502	−26.4	× 90 / 267	−8.9
Sum, rounded to a whole point						−41

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −41, −16, −22, −17, −21, −44, −28, −26, −38, −42, −41 → −30.5
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 25 · 2016→2017: 6 · 2017→2018: 5 · 2018→2019: 4 · 2019→2021: 23 · 2021→2022: 16 · 2022→2023: 2 · 2023→2024: 12 · 2024→2025: 4 · 2025→2026: 1 → average 9.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 9.8 × 2.66 = 26.1. Upper limit −4.4, lower limit −56.6.

Why 2.66? It is the standard factor from quality control, the work of Walter Shewhart and W. Edwards Deming. It turns "how much the result typically changes in a year" into "how far it can wander by chance alone".

Years with no result (no state tests were given in spring 2020) are skipped: the year-to-year change runs from the last year with a result to the next one.

Step 3 · Free or reduced-price meals

The share of enrolled students eligible for free or reduced-price meals. From 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.